Change qrcode api path to api/admin/qrcodes, adds response header to zip file
Change qrcode api path to api/admin/qrcodes, adds response header to zip file

UMM-CSci-3601-S17/digital-display-garden-iteration-4-dorfner-v2,UMM-CSci-3601-S17/digital-display-garden-iteration-3-dorfner,UMM-CSci-3601-S17/digital-display-garden-iteration-4-dorfner-v2,UMM-CSci-3601-S17/digital-display-garden-iteration-4-dorfner-v2,UMM-CSci-3601-S17/digital-display-garden-iteration-3-dorfner,UMM-CSci-3601-S17/digital-display-garden-iteration-3-dorfner,UMM-CSci-3601-S17/digital-display-garden-iteration-4-dorfner-v2,UMM-CSci-3601-S17/digital-display-garden-iteration-4-dorfner-v2,UMM-CSci-3601-S17/digital-display-garden-iteration-3-dorfner